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| author | Rusty Russell <rusty@rustcorp.com.au> | 2009-01-01 10:12:26 +1030 |
|---|---|---|
| committer | Rusty Russell <rusty@rustcorp.com.au> | 2009-01-01 10:12:26 +1030 |
| commit | bd232f97b30f6bb630efa136a777647545db3039 (patch) | |
| tree | 0dd55c07abfee9e1f4c83f9e8cbf853f817ff226 /include | |
| parent | d036e67b40f52bdd95392390108defbac7e53837 (diff) | |
| download | linux-bd232f97b30f6bb630efa136a777647545db3039.tar.gz linux-bd232f97b30f6bb630efa136a777647545db3039.tar.bz2 linux-bd232f97b30f6bb630efa136a777647545db3039.zip | |
cpumask: convert RCU implementations
Impact: use new cpumask API.
rcu_ctrlblk contains a cpumask, and it's highly optimized so I don't want
a cpumask_var_t (ie. a pointer) for the CONFIG_CPUMASK_OFFSTACK case. It
could use a dangling bitmap, and be allocated in __rcu_init to save memory,
but for the moment we use a bitmap.
(Eventually 'struct cpumask' will be undefined for CONFIG_CPUMASK_OFFSTACK,
so we use a bitmap here to show we really mean it).
We remove on-stack cpumasks, using cpumask_var_t for
rcu_torture_shuffle_tasks() and for_each_cpu_and in force_quiescent_state().
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/rcuclassic.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/rcuclassic.h b/include/linux/rcuclassic.h index 301dda829e37..f3f697df1d71 100644 --- a/include/linux/rcuclassic.h +++ b/include/linux/rcuclassic.h @@ -59,8 +59,8 @@ struct rcu_ctrlblk { int signaled; spinlock_t lock ____cacheline_internodealigned_in_smp; - cpumask_t cpumask; /* CPUs that need to switch in order */ - /* for current batch to proceed. */ + DECLARE_BITMAP(cpumask, NR_CPUS); /* CPUs that need to switch for */ + /* current batch to proceed. */ } ____cacheline_internodealigned_in_smp; /* Is batch a before batch b ? */ |